My Legitimate Sister Returns, and We Rule the Marquis's Estate Together

I took her place for sixteen years, always prepared to be hated and sent away. But when my real older sister returned, her first words were, “You’ve suffered. I’m here for you now.” She defended my place in the family, and I helped her take charge of the household. She dealt with our ruthless aunt, while I took care of our scheming younger half-sister. Household intrigues? Awful relatives? Sorry, we sisters stand together, and we call the shots in this marquis’s household.